/*
* 1.19 02/25/98
*
* Copyright (c) 1995-1997 Sun Microsystems, Inc. All Rights Reserved.
*
* This software is the confidential and proprietary information of Sun
* Microsystems, Inc. ("Confidential Information"). You shall not
* disclose such Confidential Information and shall use it only in
* accordance with the terms of the license agreement you entered into
* with Sun.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
* SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
* SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
* THIS SOFTWARE OR ITS DERIVATIVES.
*
* CopyrightVersion 1.0
*/
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
/**
* Snoop servlet. This servlet simply echos back the request line and
* headers that were sent by the client, plus any HTTPS information
* which is accessible.
*
* @version 1.19 98/02/25
* @author David Connelly
*/
public
class SnoopServlet extends HttpServlet {
public void doPost (HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException
{
//value chosen to limit denial of service
if (req.getContentLength() > 8*1024) {
res.setContentType("text/html");
PrintWriter out = res.getWriter();
out.println("Too big");
out.println("Error - content length >8k not ");
out.println("
");
} else {
doGet(req, res);
}
}
public void doGet (HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException
{
res.setContentType("text/html");
PrintWriter out = res.getWriter();
out.println("");
out.println("Snoop Servlet");
out.println("");
out.println("Requested URL:
");
out.println("");
out.println (HttpUtils.getRequestURL (req).toString ());
out.println("");
Enumeration enum = getServletConfig().getInitParameterNames();
if (enum != null) {
boolean first = true;
while (enum.hasMoreElements()) {
if (first) {
out.println("Init Parameters
");
out.println("");
first = false;
}
String param = (String) enum.nextElement();
out.println(" "+param+": "+getInitParameter(param));
}
out.println("");
}
out.println("Request information:
");
out.println("");
print(out, "Request method", req.getMethod());
print(out, "Request URI", req.getRequestURI());
print(out, "Request protocol", req.getProtocol());
print(out, "Servlet path", req.getServletPath());
print(out, "Path info", req.getPathInfo());
print(out, "Path translated", req.getPathTranslated());
print(out, "Query string", req.getQueryString());
print(out, "Content length", req.getContentLength());
print(out, "Content type", req.getContentType());
print(out, "Server name", req.getServerName());
print(out, "Server port", req.getServerPort());
print(out, "Remote user", req.getRemoteUser());
print(out, "Remote address", req.getRemoteAddr());
print(out, "Remote host", req.getRemoteHost());
print(out, "Authorization scheme", req.getAuthType());
out.println("");
Enumeration e = req.getHeaderNames();
if (e.hasMoreElements()) {
out.println("Request headers:
");
out.println("");
while (e.hasMoreElements()) {
String name = (String)e.nextElement();
out.println(" " + name + ": " + req.getHeader(name));
}
out.println("");
}
e = req.getParameterNames();
if (e.hasMoreElements()) {
out.println("Servlet parameters (Single Value style):
");
out.println("");
while (e.hasMoreElements()) {
String name = (String)e.nextElement();
out.println(" " + name + " = " + req.getParameter(name));
}
out.println("");
}
e = req.getParameterNames();
if (e.hasMoreElements()) {
out.println("Servlet parameters (Multiple Value style):
");
out.println("");
while (e.hasMoreElements()) {
String name = (String)e.nextElement();
String vals[] = (String []) req.getParameterValues(name);
if (vals != null) {
out.print(" " + name + " = ");
out.println(vals[0]);
for (int i = 1; i");
}
out.println("");
}
String charset = res.getCharacterEncoding ();
out.println ("Response Information:
");
out.println ("");
out.println ("MIME character encoding: " + charset);
out.println ("");
out.println("");
}
private void print(PrintWriter out, String name, String value)
throws IOException
{
out.print(" " + name + ": ");
out.println(value == null ? "<none>" : value);
}
private void print(PrintWriter out, String name, int value)
throws IOException
{
out.print(" " + name + ": ");
if (value == -1) {
out.println("<none>");
} else {
out.println(value);
}
}
public String getServletInfo() {
return "A servlet that shows the request headers sent by the client";
}
}